Question

Why members of homologous series show different physical properties where as they have same chemical properties?

Answer 1

ANSWER:--

Homologous Series:-

◆ It is Series of compounds in which in the same functional groups substitute for hydrogen in a carbon chain.


◆ For instance, the Alcohols:
CH2OH
C2H5OH
C3H7OH
C4H9OH

◆ The successive member differs by one -CH2 unit and 14 unit of mass.

◆ The chemical properties are imparted by the functional groups thus all member have similar properties. But the members have different physical properties.

◆ The physical properties vary among the members of Homologous Series due to different in their molecular mass.

◆ Melting point and boiling point will increase with increasing molecular mass.


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Answer 2

Explanation:

Why members of homologous series show different physical properties where as they have same chemical properties?The physical property of any particular member of a homologous series depends on its size, or its position within the homologous series. The physical properties, such as solubility, melting point, boiling point, specific gravity etc. show a gradual change with the increase in their relative molecular masses.